;(function ($) {
    $.fn.extend({
        displayPart: function () {
            var displayLength = 100;
            displayLength = this.attr("displayLength") || displayLength;
            var text = this.text();
            if (!text) return "";

            var result = "";
            var count = 0;
            for (var i = 0; i < displayLength; i++) {
                var _char = text.charAt(i);
                if (count >= displayLength) break;
                if (/[^x00-xff]/.test(_char)) count++;  //双字节字符，//[u4e00-u9fa5]中文  

                result += _char;
                count++;
            }
            if (result.length < text.length) {
                result += "...";
            }
            this.text(result);
        }
    });
})(jQuery);